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Thermistor Probe Design Guide

Custom Thermistor Probe Design Guide. ThermX is a manufacturer of custom thermistor probes used for applications in analytical test equipment, heating & cooling systems, aerospace, automotive, transportation, medical, pharmaceutical, chemical processing, food processing, semiconductor processing, power generation, and fabrication machinery.

Use our custom thermistor probe design guide as a starting point for your design. Available in various styles, dimensions and ohmic values, we offer custom designs for monitoring surface temperature, air temperature and direct immersion liquid temperature with a variety of probe types and housings. Housing options include closed end tubes, flanged tubes, ring lug/terminal, flag terminal, hex fitting, threaded hex screw, aluminum block, air flow birdcage and transition probes. We can work with your specific thermistor element or help in locating a replacement those hard-to-get elements.

ThermX offers the 44000 and 55000 series thermistors with high precision thermistor elements, available in customizable probes and assemblies to provide precise and reliable temperature measurement in the most demanding applications. There are epoxy-coated and glass-coated elements to choose from which can be configured to measure temperature in a variety of application media: surface, liquid, air, or block. Match any precision interchangeable thermistor with cable and sheath options to create a custom probe for your temperature measurement application.

Call for Technical Design Support | Built to Your Specification | OEM Thermistor Probes
Contact Us With Your Design Requirements 1-800-284-3769

Thermistor Elements

Style "RTT" Ring Terminal Thermistor Probe

Ring Terminal Thermistor Probe
  • Available with #6, #8, #10, 1/4", 5/16" and 3/8" Ring Terminals
  • Surface temperature applications in medical devices, battery terminals
  • 0.1°C & 0.2°C interchangeable thermistors

Style "FTT" Flag Terminal Thermistor Probe

Flag Terminal Thermistor Probe
  • Available with #6, #8, #10, 1/4" Flag Terminals
  • Surface temperature applications in analytical test equipment
  • 0.1°C & 0.2°C interchangeable thermistors

Style "SR" Surface Mount Thermistor Probe

Button Surface RTD Probe
  • Surface temperature applications
  • Available with adhesive backing 
  • 0.1°C & 0.2°C interchangeable thermistors

Style "HB" Hex Bolt Thermistor Probe

Hex Bolt RTD
  • Allow for easy installation for surface temperature measurement
  • OEM thermistor probe
  • 0.1°C & 0.2°C interchangeable thermistors

Style "AP" Waterproof Air Thermistor Probe

Waterproof Air Probe RTD
  • Ideal for measuring wet gas applications & validation of cold storage rooms
  • 0.1°C & 0.2°C interchangeable thermistors

Style "AP" Birdcage Air Thermistor Probe

Birdcage RTD Air Probe
  • Ideal for measuring dry gas applications & electrical cabinets
  • 0.1°C & 0.2°C interchangeable thermistors

Style "PW" Tube & Wire Thermistor Probe

Small Tube RTDTube and Wire Thermistor Probe
  • General purpose OEM thermistor probes
  • 0.1°C & 0.2°C interchangeable thermistors

Style "HF" Hex Fitting Thermistor Probe

Hex Fitting RTD
  • Fluid measurement thermistor probe
  • Brazed or Welded 316 SS fittings & tubing
  • 0.1°C & 0.2°C interchangeable thermistors

Style "AB" Aluminum Block Thermistor Probe

Aluminum Block Surface ProbeDual RTD Aluminum Block Surface Probe
  • Good thermal conductivity for a variety of surface temperature applications
  • 0.1°C & 0.2°C interchangeable thermistors

Style "FR" Flanged Thermistor Probe

Flanged Tube RTD Probe
  • Ideal for air duct measurements
  • 0.1°C & 0.2°C interchangeable thermistors

Style "PP" Plug & Jack Thermistor Probe

RTD Probe with Miniature Connector
  • General purpose: liquid immersion probe
  • 0.1°C & 0.2°C interchangeable thermistors

Style "PT" Transition Thermistor Probe

Transition RTD
  • General purpose: air, gas, & liquid probe
  • 0.1°C & 0.2°C interchangeable thermistors
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